#engine-source | Unreal Source | Page 23

elder falcon Jun 17, 2018, 9:53 PM

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disabling the ugly lod

spiral mortar Jun 17, 2018, 9:53 PM

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You already rebuilt the engine?

elder falcon Jun 17, 2018, 9:53 PM

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I mean that was one cpp file

spiral mortar Jun 17, 2018, 9:53 PM

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Still

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😉

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How is it?

elder falcon Jun 17, 2018, 9:53 PM

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https://i.imgur.com/qDhEHni.png pls

Imgur

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that's not how you draw a circle

spiral mortar Jun 17, 2018, 9:54 PM

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...

elder falcon Jun 17, 2018, 9:54 PM

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tho they always seem to do that for curves like that even at normal zoom

spiral mortar Jun 17, 2018, 9:54 PM

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Oh that's not from you

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Thought it was hand painted

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It's a wire?

elder falcon Jun 17, 2018, 9:55 PM

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yeah it doesn't like wires going the other way

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white ones all nice and fancy

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https://i.imgur.com/h8Z1AUM.png

Imgur

spiral mortar Jun 17, 2018, 9:56 PM

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Mmmh

elder falcon Jun 17, 2018, 9:56 PM

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https://i.imgur.com/GecrCgO.png quality software

Imgur

spiral mortar Jun 17, 2018, 9:56 PM

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Maybe there's an LOD setting for that too

elder falcon Jun 17, 2018, 9:57 PM

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they're kinda always crappy https://i.imgur.com/iHilfDb.png

Imgur

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it probably has lod but computes the wrong lod level when it switches direction

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https://i.imgur.com/FtuT3oN.png

Imgur

spiral mortar Jun 17, 2018, 10:03 PM

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@elder falcon

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📎 unknown.png

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¯_(ツ)_/¯

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Try

elder falcon Jun 17, 2018, 10:05 PM

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hmm but is that related to this issue?

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that seems like it's something about zoom

spiral mortar Jun 17, 2018, 10:05 PM

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Engine\Source\Runtime\SlateCore\Private\Rendering\ElementBatcher.cpp

elder falcon Jun 17, 2018, 10:05 PM

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but this is wrong on all lods

spiral mortar Jun 17, 2018, 10:05 PM

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Line 1225

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float NumSteps = FMath::Clamp<float>(FMath::CeilToInt(FMath::Max(DirectLength,HandleLength)/15.0f), 1, 256); -> float NumSteps = 256;

elder falcon Jun 17, 2018, 10:07 PM

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yes it's a lot better now

spiral mortar Jun 17, 2018, 10:07 PM

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Really?

elder falcon Jun 17, 2018, 10:07 PM

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https://i.imgur.com/Qg7YeDW.png

Imgur

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https://i.imgur.com/Ug5ehkK.png

Imgur

spiral mortar Jun 17, 2018, 10:07 PM

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Try 1024

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😛

elder falcon Jun 17, 2018, 10:07 PM

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so it must be computing the wire length wrong I guess?

spiral mortar Jun 17, 2018, 10:07 PM

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Yes

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https://cdn.discordapp.com/attachments/375021179075035147/458029038297153580/unknown.png

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Can you screenshot a full BP window?

elder falcon Jun 17, 2018, 10:08 PM

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with it set to 256 or default?

spiral mortar Jun 17, 2018, 10:08 PM

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256

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Zoomed out

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Just to see how it looks

elder falcon Jun 17, 2018, 10:09 PM

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this is zoomed out all the way https://i.imgur.com/YE3flgz.png

Imgur

spiral mortar Jun 17, 2018, 10:09 PM

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It's so better

elder falcon Jun 17, 2018, 10:09 PM

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this is so it fits the window https://i.imgur.com/FrPoRqr.png

Imgur

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it's 100x better than the default drawing

spiral mortar Jun 17, 2018, 10:10 PM

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thinking of ways to put this in a plugin

elder falcon Jun 17, 2018, 10:10 PM

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so I'm thinking

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//@todo SLATE: This should probably be done in window space so there are no scaling artifacts?

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is not the problem

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since it happens on 1:1 scale too

spiral mortar Jun 17, 2018, 10:10 PM

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It's not that scale

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I think

elder falcon Jun 17, 2018, 10:11 PM

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the problem is that one of https://i.imgur.com/cpr2Zau.png is bullshit when the wire changes direction

Imgur

spiral mortar Jun 17, 2018, 10:11 PM

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Ah true

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PR?

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😛

elder falcon Jun 17, 2018, 10:11 PM

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tho I don't know enough about splines to fix the math

spiral mortar Jun 17, 2018, 10:11 PM

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I don't think it's possible to do so easily

elder falcon Jun 17, 2018, 10:12 PM

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what is "handle length" even supposed to represent?

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also

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num steps

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float

spiral mortar Jun 17, 2018, 10:13 PM

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Yeah this is shit

elder falcon Jun 17, 2018, 10:16 PM

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google how to calculate length of spline segment

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extremely complicated math shows up

spiral mortar Jun 17, 2018, 10:16 PM

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hehe

elder falcon Jun 17, 2018, 10:18 PM

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I just doubled the steps that default formula says it should have and now it looks fine

spiral mortar Jun 17, 2018, 10:19 PM

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lol

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256 is safer

elder falcon Jun 17, 2018, 10:19 PM

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but then it's going to draw like 10000 steps for a whole blueprint lol

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or more

spiral mortar Jun 17, 2018, 10:19 PM

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Doesn't matter

elder falcon Jun 17, 2018, 10:19 PM

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this way it still reduces with zoom

spiral mortar Jun 17, 2018, 10:19 PM

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WE NEED THEM

elder falcon Jun 17, 2018, 10:20 PM

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ok let's triple it instead of double then

spiral mortar Jun 17, 2018, 10:20 PM

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ALL THE STEPS

elder falcon Jun 17, 2018, 10:20 PM

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can header files be removed

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changing this cpp rebuilds super fast

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so obviously removing all header files is the solution

spiral mortar Jun 17, 2018, 10:20 PM

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wtf

elder falcon Jun 17, 2018, 10:20 PM

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because they are slow

spiral mortar Jun 17, 2018, 10:20 PM

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😂

elder falcon Jun 17, 2018, 10:21 PM

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its good now https://i.imgur.com/RvAgG1m.png

Imgur

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https://i.imgur.com/BYwG4CM.png

Imgur

spiral mortar Jun 17, 2018, 10:21 PM

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Post it on reddit 😛

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Make ppl jealous

elder falcon Jun 17, 2018, 10:22 PM

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I have never posted anything on reddit before lol

spiral mortar Jun 17, 2018, 10:22 PM

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Add some zoom levels

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To be able to screenshot the entire BP

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With a big BP

elder falcon Jun 17, 2018, 10:23 PM

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lol rip

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https://i.imgur.com/oySGy1U.png this one feels like it runs at 3 fps

Imgur

spiral mortar Jun 17, 2018, 10:23 PM

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😂

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Seriously though, is there a BP screenshot tool?

elder falcon Jun 17, 2018, 10:23 PM

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uh

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I have no idea

spiral mortar Jun 17, 2018, 10:24 PM

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Doesn't seem so

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Let's make a plugin

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Sell it on the MP

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Make some 💰

elder falcon Jun 17, 2018, 10:24 PM

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lol noone would pay for being able to screenshot a bp

spiral mortar Jun 17, 2018, 10:24 PM

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😭

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But it's so useful

elder falcon Jun 17, 2018, 10:25 PM

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it is

spiral mortar Jun 17, 2018, 10:26 PM

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Not so easy though 🤔

elder falcon Jun 17, 2018, 10:27 PM

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it can just be really slow right

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move bp to top left

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take screenshot

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wait for next frame

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take another

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...

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combine

spiral mortar Jun 17, 2018, 10:27 PM

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I mean without source modif

elder falcon Jun 17, 2018, 10:27 PM

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this wouldn't need that would it

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surely getting the width of the graph is possible without?

spiral mortar Jun 17, 2018, 10:27 PM

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Yes

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But how do you get the graph itself?

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nvm

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Iterating the graphs of a bp

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Ok let's do this

elder falcon Jun 17, 2018, 10:29 PM

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there is just no difference between default detail and medium detail lol

spiral mortar Jun 17, 2018, 10:31 PM

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I'm really going to do it

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It'll be the plugin of the year

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kappa

elder falcon Jun 17, 2018, 10:31 PM

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lol

spiral mortar Jun 17, 2018, 10:31 PM

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📎 unknown.png

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as soon as VAX will have finished its stuff

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😢

elder falcon Jun 17, 2018, 10:32 PM

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ok the trick is to just disable LowestDetail

spiral mortar Jun 17, 2018, 10:32 PM

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lol

elder falcon Jun 17, 2018, 10:32 PM

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https://i.imgur.com/Nk8nlCu.png https://i.imgur.com/65wxcWb.png

Imgur

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now it runs way faster because all the invisible text is skipped

spiral mortar Jun 17, 2018, 10:32 PM

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😃

elder falcon Jun 17, 2018, 10:33 PM

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but it doesn't do the step where each node is replace with a square

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https://i.imgur.com/RBNBvyC.png 10/10

Imgur

spiral mortar Jun 17, 2018, 10:33 PM

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lol

elder falcon Jun 17, 2018, 10:33 PM

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do you also know where these are drawn lol

spiral mortar Jun 17, 2018, 10:33 PM

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I can find

elder falcon Jun 17, 2018, 10:34 PM

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surely it is possible to move the drawing of tooltips to the end

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hmm

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how do I make it not double the wire segments for ones that don't change direction

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woa what the hell is this thing https://i.imgur.com/GS5lhxB.png

Imgur

elder falcon Jun 17, 2018, 10:54 PM

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well I'm leaving it like this now https://github.com/EpicGames/UnrealEngine/commit/6ff50189bf29e0ac7b0ec0c885c2023bea4b5a21

spiral mortar Jun 17, 2018, 10:57 PM

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Is that your fork?

elder falcon Jun 17, 2018, 10:58 PM

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yes

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commits from all forks are visible in the main repo if you get the full hash right

spiral mortar Jun 17, 2018, 10:58 PM

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Oh

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Nearly finished the screenshot tool

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📎 unknown.png

elder falcon Jun 17, 2018, 10:59 PM

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nice

spiral mortar Jun 17, 2018, 10:59 PM

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hehe

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Now let's make the "take a screenshot" part

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😅

elder falcon Jun 17, 2018, 11:00 PM

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lmao

spiral mortar Jun 17, 2018, 11:00 PM

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Shouldn't be too hard

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™

elder falcon Jun 17, 2018, 11:03 PM

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https://i.imgur.com/EvSoof7.png a

Imgur

spiral mortar Jun 17, 2018, 11:04 PM

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📎 unknown.png

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😢

elder falcon Jun 17, 2018, 11:05 PM

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wtf

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y tho

spiral mortar Jun 17, 2018, 11:07 PM

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Ok YOLO

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📎 unknown.png

elder falcon Jun 17, 2018, 11:07 PM

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rip

spiral mortar Jun 17, 2018, 11:08 PM

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Let's see

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It might even work

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📎 nd_img_ReceiveBeginPlay.png

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Kinda

spiral mortar Jun 17, 2018, 11:39 PM

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📎 unknown.png

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Nearly there

elder falcon Jun 18, 2018, 9:09 AM

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@spiral mortar btw how did you find those 2 places so fast yesterday?

spiral mortar Jun 18, 2018, 9:09 AM

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Skill

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Really

elder falcon Jun 18, 2018, 9:09 AM

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pls

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you probably used visual assist

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but I never know what to search for when it involves slate

spiral mortar Jun 18, 2018, 9:10 AM

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Well idk how to explain it

elder falcon Jun 18, 2018, 9:10 AM

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aw

spiral mortar Jun 18, 2018, 9:10 AM

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trying to remember

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For the zoom thing

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Alt Shift S

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Graph Zoom

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Then I found that

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For the splines

elder falcon Jun 18, 2018, 9:11 AM

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oh

spiral mortar Jun 18, 2018, 9:12 AM

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I knew it was done in the drawing policy of the graph

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From there easy to find the call

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So yeah

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Skill

elder falcon Jun 18, 2018, 12:45 PM

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has anyone ever used the memory profiler before? if I try bUseMallocProfiler = true; in target.cs the program just immediately closes on start

elder falcon Jun 18, 2018, 1:00 PM

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it looks like the memory profiler crashes itself here during static initialization of some string :( https://i.imgur.com/m3NJ67m.png https://i.imgur.com/xYfj11p.png

Imgur

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I've no idea how to even begin doing something about it

spiral mortar Jun 18, 2018, 1:43 PM

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🤔

cold wigeon Jun 18, 2018, 3:22 PM

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Ctrl + mouse scroll also gets you +1 to +7. Zoom in BP graph

spiral mortar Jun 18, 2018, 3:46 PM

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Yep

elder falcon Jun 18, 2018, 7:29 PM

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aw making the comments draw above the nodes isn't easy

proven grove Jun 18, 2018, 7:51 PM

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running valgrind on unreal segfaults valgrind

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nice

spiral mortar Jun 18, 2018, 8:14 PM

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@proven grove Valgrind is way too slow for UE right?

proven grove Jun 18, 2018, 8:14 PM

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that, and it cant handle unreal

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it just gives up after a few seconds

spiral mortar Jun 18, 2018, 8:16 PM

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I made that screenshot thing

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But it only screenshots the wires 😢

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btw @elder falcon

elder falcon Jun 18, 2018, 8:17 PM

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use it to make line art :D

spiral mortar Jun 18, 2018, 8:17 PM

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I spent way too much time on this

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For some reason the nodes & the bg won't draw

spiral mortar Jun 18, 2018, 9:09 PM

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📎 unknown.png

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😢

wicked whale Jun 18, 2018, 9:35 PM

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Nice line

elder falcon Jun 18, 2018, 9:41 PM

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sock curve

spiral mortar Jun 18, 2018, 9:42 PM

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Ok so I'm pretty sure it's not possible

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😭

wicked whale Jun 18, 2018, 9:42 PM

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What is it even supposed to do 🤔

spiral mortar Jun 18, 2018, 9:42 PM

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Take a screenshot of a BP graph

wicked whale Jun 18, 2018, 9:43 PM

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How were you outputting the visual data?

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beep boop

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e.g. were you using render target(s)?

spiral mortar Jun 18, 2018, 9:44 PM

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Yeah

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@wicked whale That's a bad idea? 😛

wicked whale Jun 18, 2018, 9:45 PM

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No it's a good idea

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what functions where you using

spiral mortar Jun 18, 2018, 9:45 PM

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were*?

wicked whale Jun 18, 2018, 9:45 PM

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where'd're

spiral mortar Jun 18, 2018, 9:45 PM

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who'd

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📎 unknown.png

wicked whale Jun 18, 2018, 9:46 PM

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it's past 5:30 where I'm at, I've disabled the grammar module

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You need to pass the FTextureRenderTargetResource you get from GameThread_GetRenderTargetResource into the Rendering thread, I think

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although I'd kinda expect it to assert

spiral mortar Jun 18, 2018, 9:47 PM

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NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO

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ffs

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It feels right

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Ah well

wicked whale Jun 18, 2018, 9:48 PM

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documentation says expliclity do not dereference the game thread pointer

spiral mortar Jun 18, 2018, 9:48 PM

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Not even able to copy paste code

wicked whale Jun 18, 2018, 9:48 PM

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so I believe the right approach is wrapping the ReadPixels call into ENQUEUE_UNIQUE_RENDER_COMMAND

spiral mortar Jun 18, 2018, 9:49 PM

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Well no?

wicked whale Jun 18, 2018, 9:49 PM

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oh wait I'm stupid

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right right your approach is good

spiral mortar Jun 18, 2018, 9:49 PM

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It's not mine 😉

wicked whale Jun 18, 2018, 9:49 PM

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I literally just went through all of this today and I have yet to internalize it

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yeah the readpixels function does the render command call for you

spiral mortar Jun 18, 2018, 9:49 PM

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😃

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Any idea?

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This works fine to render nodes

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But not graphs

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😭

wicked whale Jun 18, 2018, 9:50 PM

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I can only guess why it doesn't render right

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probably the rest of the visual state is cached

spiral mortar Jun 18, 2018, 9:50 PM

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🤔

wicked whale Jun 18, 2018, 9:50 PM

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since moving the graph around redraws nodes

spiral mortar Jun 18, 2018, 9:50 PM

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📎 unknown.png

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Oh

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Right

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👍

wicked whale Jun 18, 2018, 9:51 PM

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that being said not certain how to express it to render target, if that even IS how it functions

spiral mortar Jun 18, 2018, 9:51 PM

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How do I solve that 🤔

wicked whale Jun 18, 2018, 9:51 PM

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there's some RHI commands to ask for a screenshot, those might be of use

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it's a veeery long list of functions here, I was sure I saw something related to screenshotting but I don't see it now

spiral mortar Jun 18, 2018, 9:55 PM

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Where would the cache be though?

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Outside OnPaint?

wicked whale Jun 18, 2018, 9:55 PM

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beats me, I'm a digital dummy to the deep down of rendering

spiral mortar Jun 18, 2018, 9:56 PM

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I'm totally new to this

wicked whale Jun 18, 2018, 9:58 PM

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uhhhhhhhhhhhh

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@spiral mortar I have absolutely no clue how this stuff works but you can use functions of RHICmdList inside Render Thread through ENQUEUE_UNIQUE_RENDER_COMMAND, there's a function called GetViewportBackBuffer that I suspect has the 'cached' stuff you need

spiral mortar Jun 18, 2018, 10:02 PM

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🤔

wicked whale Jun 18, 2018, 10:02 PM

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Look to the implementation of ReadPixels in RenderTarget, it will make more sense once you read a bit of it

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Essentially you just need to run GetViewportBackBuffer and then run the TextureRHI that returns through the same function that ReadPixels uses, I believe it's ReadSurfaceFLoatData or somesuch

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Which actually makes me curious, @spiral mortar how did you get a reference to the primary viewport render target in the first place, anyway?

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Or if you didn't, were you making your own render target and reading the viewport data with it?

spiral mortar Jun 18, 2018, 10:06 PM

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I'm creating a new graph panel in the background from the BP graph

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That's the rendered widget

wicked whale Jun 18, 2018, 10:06 PM

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Oh I see

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if you can just pull the textureRHI of the viewport itself you could copy that to a separate texture, but I have no clue how that interaction works with Slate (I presume)

spiral mortar Jun 18, 2018, 10:08 PM

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🤔

spiral mortar Jun 18, 2018, 10:36 PM

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📎 unknown.png

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Better!

pearl fulcrum Jun 18, 2018, 10:37 PM

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So this doesn't move the canvas around and wait for the next frame? Cause one already was being worked on that did that method

spiral mortar Jun 18, 2018, 10:40 PM

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Nah that's not good

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This will create a 10k virtual window

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Open the graph in it

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And save the render

elder falcon Jun 18, 2018, 10:42 PM

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what if my graph is wider than 10k pixels

spiral mortar Jun 18, 2018, 10:43 PM

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THEN 100k

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😅

elder falcon Jun 18, 2018, 10:56 PM

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I wonder if that actually works :D

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but it will crop it in the end right?

spiral mortar Jun 18, 2018, 10:59 PM

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¯_(ツ)_/¯

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I think I'm gonna cry

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No all fine

bronze crest Jun 19, 2018, 9:26 AM

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we need to remind Epic that Dev-Rendering is still the only major branch missing on Github: https://forums.unrealengine.com/unreal-engine/feedback-for-epic/1491051-dev-rendering-branch-still-missing-on-github-any-update-on-that-please

Unreal Engine Forums

1.5 months ago, you finally made it so that the individual branches are available on Github. What a great change, finally! It took a few days for most branches

elder falcon Jun 19, 2018, 11:27 AM

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there are a few more missing still

hidden hedge Jun 19, 2018, 12:28 PM

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there are a few yeah, but some of them haven't had any activity for a while

versed sky Jun 20, 2018, 1:00 AM

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Does anyone have experience with FPrimitiveSceneProxy? I have GetViewRelevance set bDrawRelevance to true if selected. But it seems to require that I also have the owning comp position in view. I'd like it to always render if selected.

versed sky Jun 20, 2018, 2:06 AM

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Seems like CalcBounds on the Component is close to what I'm looking for. But doesn't help for rendering in editor, only in game (it seems)

gloomy hamlet Jun 20, 2018, 12:03 PM

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CalcBounds should be used in editor too.

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@versed sky Putting this should disable bounds checking so you can see if that's the issue:

    return FBoxSphereBounds(BoundingBox);```

spiral mortar Jun 20, 2018, 2:07 PM

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@gloomy hamlet Seems your extension is made for white theme 😉

📎 unknown.png

gloomy hamlet Jun 20, 2018, 2:10 PM

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Heh, yeah that's on my list of things I need to sort.

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Long list...

spiral mortar Jun 20, 2018, 2:12 PM

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😉

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btw what's the difference between the Classes and Public folders?

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Actually I seem to be the only one using Classes 🤔

elder falcon Jun 20, 2018, 2:16 PM

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a long time ago uht only parsed headers in Classes folder, now that that limitation has been removed it's only legacy

spiral mortar Jun 20, 2018, 2:16 PM

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Oh

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So I should only use Public?

elder falcon Jun 20, 2018, 2:16 PM

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yeah that's the new way

spiral mortar Jun 20, 2018, 2:16 PM

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Ok

gloomy hamlet Jun 20, 2018, 2:25 PM

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Yup. Some newer engine code added in 4.20 I've been checking out doesn't even seem to bother with a Private folder either.

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I think it was purely convention anyway.

lost linden Jun 20, 2018, 3:16 PM

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for most of the past month, I have been reading @gloomy hamlet 's solution to things. So thanks for the detail customization stuff. Way more helpful than the official docs 😉

gloomy hamlet Jun 20, 2018, 3:21 PM

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Glad it's useful. Hopefully not too outdated, that stuff was written a while back now.

lost linden Jun 20, 2018, 3:23 PM

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yeah it all worked. The official docs is still pre-dating the current system though. It was confusing at first

gloomy hamlet Jun 20, 2018, 3:23 PM

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Yeah, they were already outdated when I first wrote the article.

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Seems that Epic have someone periodically go through docs updating the version stamp, without bothering to actually see if the content needs to be updated.

cold wigeon Jun 20, 2018, 5:38 PM

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UBlueprintFunctionLibrary gets actor from plugin, and called function on actor that returns "this"

📎 unknown.png

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📎 unknown.png

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📎 unknown.png

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(I know this is wrong)
I'd like to have something like this:

📎 unknown.png

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I don't see why I need to have indirection to make this work

spiral mortar Jun 20, 2018, 6:20 PM

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@cold wigeon ?

cold wigeon Jun 20, 2018, 6:20 PM

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yes?

spiral mortar Jun 20, 2018, 6:20 PM

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indirection = return this?

cold wigeon Jun 20, 2018, 6:20 PM

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Sorry I delete some info
I want to remove the blueprint library indirection

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I would like to call the plugin directly

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Also, I would like to not have to call a function in the actor to return itself as I already have it as a variable in the plugin

spiral mortar Jun 20, 2018, 6:25 PM

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I would like to call the plugin directly How?

cold wigeon Jun 20, 2018, 6:25 PM

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Okay, ignore the part about removing the blueprint library

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From this:
return FTimePlugin::Get().TimeManagerActor->GetTimeManager();
to this:
return FTimePlugin::Get().TimeManagerActor;

spiral mortar Jun 20, 2018, 6:27 PM

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Well just do it

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From what I can tell FTimePlugin::Get().TimeManagerActor->GetTimeManager(); == FTimePlugin::Get().TimeManagerActor;

cold wigeon Jun 20, 2018, 6:28 PM

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GetTimeManager is a function inside of the actor that just returns "this"

spiral mortar Jun 20, 2018, 6:28 PM

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Yes, I guess it wasn't designed like that initially

cold wigeon Jun 20, 2018, 6:29 PM

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Well. I'm dumbfounded again... its works just like you said

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Okay, thats really great.
And I am assuming, there is no way to abuse IModuleInterface to get a blueprint global function without using a blueprint library right?

limber jacinth Jun 20, 2018, 7:42 PM

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https://gyazo.com/c56888e89f4ffa465dc6b785cb2b6bca

Gyazo

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whoops delayed but that is how i organise my project, pretty bad

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:/

ocean flax Jun 20, 2018, 11:46 PM

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How would I go about keeping Unreal from using my C: driver for anything? I have an SSD that is very short in memory, and as it is, I had to delete numerous Users/AppData/Local Unreal and Launcher folders. Especially, Common, which was pretty hefty in size. Any help is appreciated.

elder falcon Jun 20, 2018, 11:50 PM

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it will always put things in appdata

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one way would be to move appdata somewhere else and create a symlink to it on your too small ssd

ocean flax Jun 20, 2018, 11:54 PM

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I did that with OneDrive, which I use religiously, and since doing so I have what appears to be phantom copies of items. I'd rather not mess with "system" folders if I can help it.

elder falcon Jun 20, 2018, 11:56 PM

#

programs just really like dumping stuff in appdata

#

you can move the vault stuff from the launcher elsewhere

ocean flax Jun 21, 2018, 12:01 AM

#

Here's what I mean. . .and making matters worse "they" are synced to the cloud 😲

📎 OneDrive.png

#

When you say "move the vault stuff", what does that entail? Cutting the folder and placing it somewhere else? Anyway to configure the EpicGamesLauncher, which would benefit for a more fitting name, to access the content at a different location?

elder falcon Jun 21, 2018, 12:07 AM

#

yeah you can move that stuff from the launcher

ocean flax Jun 21, 2018, 12:15 AM

#

Thanks. I'll take a look at it later. Tying to build at the moment.

cold wigeon Jun 21, 2018, 7:05 AM

#

The longer I stare at this, the more UE4 and their freaking commenting practices piss me off:
http://api.unrealengine.com/INT/API/Runtime/Engine/Engine/FWorldDelegates/index.html

FWorldDelegates

World delegates

#

btw, there is such a thing as more than one UWorld
And for whatever reason UWorld post init gets called not only multiple times during editor startup, but everytime you open a blueprint.

#

Wow... and then I get a gift:
https://forums.unrealengine.com/development-discussion/c-gameplay-programming/15671-spawning-actors-during-level-load
Goodnight all

Unreal Engine Forums

For gameplay programmers writing C++ code.

gloomy hamlet Jun 21, 2018, 9:54 AM

#

@cold wigeon In the editor heaps of worlds get created, mostly for previewing. So that's why it's triggered on opening a blueprint.

#

But yeah the world delegates are pretty confusing and badly done.

#

"Hey, a new world was created, but I'm not giving you a pointer to it or any context info. You have to guess."
"Thanks UE4."

grand sand Jun 21, 2018, 4:41 PM

#

I'm not able to compiler , Rendercore.dll. Here are the logs

#

📎 shaderError.JPG

#

📎 shaderOutput.JPG

#

RenderCore.dll

cold wigeon Jun 21, 2018, 4:56 PM

#

@gloomy hamlet thanks for the support xD. Yea even doing checks on the level would return null always. That's when I gave up an found that other post

elder falcon Jun 21, 2018, 5:17 PM

#

wtf 4.20 no longer tells you how many actions it's going to compile

grand sand Jun 21, 2018, 6:10 PM

#

any possible solution for the error above ?

wicked whale Jun 21, 2018, 6:11 PM

#

@grand sand You've made sure to run setup.bat right?

cold wigeon Jun 21, 2018, 6:52 PM

#

@gloomy hamlet If I have a plugin IModuleInterface, and I just want to auto inject a single actor into every map, which delegate would work?

I basically have a for loop that looks for ATimeManager, and if found, sets the "global" reference, and exits the function preventing a second from being spawned. Else, it spawns one, and sets the "global" reference.

I have everything working, except that if I open a blueprint while the game is running, my for loop will spawn a new ATimeManager and set it as the global reference, and breaks my dependent plugins

#

There needs to be a ATimeManager in EVERY map, PIE, game, standalone ect.
This has "auto" default behavior so the user doesn't crash when using one of our sub-plugins that are dependent

gloomy hamlet Jun 21, 2018, 7:02 PM

#

I have plugins do similar things, looks like I'm using OnPostWorldInitialization delegate.

#

Might fire a bit later, but it gives you a world pointer.

cold wigeon Jun 21, 2018, 7:03 PM

#

That delegate is the one firing everytime I open a blueprint

#

fires twice during engine load, and a few times during map load (nearly empty map, thank god)

gloomy hamlet Jun 21, 2018, 7:04 PM

#

Yep. Put in this check if(World->IsGameWorld()

#

That will limit to PIE and runtime worlds, but exclude static editor map and previews.

cold wigeon Jun 21, 2018, 7:10 PM

#

Okay, just tested that. Now it only runs once. Nice.
Are you aware of any ifdef editor type delegate for the map load?

gloomy hamlet Jun 21, 2018, 7:13 PM

#

No, but not sure what you mean.

cold wigeon Jun 21, 2018, 7:15 PM

#

Usually there are delegates you can hook but are tied directly to the editor itself. aka, put the ifdef editor, or you will crash if you run this packaged

#

They give you more control, but they can only be used inside of the editor

#

I'll try these:
http://api.unrealengine.com/INT/API/Editor/UnrealEd/FEditorDelegates/index.html

FEditorDelegates

FEditorDelegates Delegates used by the editor.

river warren Jun 21, 2018, 10:11 PM

#

Perhaps this is better asked here; does anyone understand what 'Time' is in FHitResult? is it the time it takes for a trace to finish? Seems odd

#

i cant find out where it is set/calculated either

#

its initialized to 1.0

#

and its supposed to be between 0.0 and 1.0

spiral mortar Jun 21, 2018, 10:31 PM

#

@river warren I'd say it's the progress

#

Like 0 = start position

#

1 = end position

river warren Jun 21, 2018, 10:31 PM

#

is that not what distance is?

spiral mortar Jun 21, 2018, 10:31 PM

#

Well kinda

#

idk 😃

river warren Jun 21, 2018, 10:31 PM

#

waaaah

#

i thought the same thing, maybe its some kind of normalized distance but poorly named

spiral mortar Jun 21, 2018, 10:32 PM

#

📎 unknown.png

#

Seems to be that though

river warren Jun 21, 2018, 10:33 PM

#

okay, so theres a case of it being used im trying to understand in CharacterMovementComponent

#

in the PhysFalling function its doing:

#

float subTimeTickRemaining = timeTick * (1.f - Hit.Time);

#

so... i guess its tracing a certain distance. the distance of the trace is determine by how much time is in the tick and how fast its going perhaps?

#

and then its using Time to say, okay this is how much time we have left when the hit occurs?

#

I guess that would sorta make sense, but very confusing

gloomy hamlet Jun 21, 2018, 11:35 PM

#

Yeah that's it. It will be tracing the movement, so the end point would be the position the thing would get to by the end of the frame, if it kept moving unobstructed.

river warren Jun 21, 2018, 11:49 PM

#

@gloomy hamlet ah okay, thanks for confirming my thoughts 😃

#

it turned out the issue i was having was due to server spawned buildings not having rounded position/scale values... which caused client correction issues. Had absolutely nothing to do with my character movement or landing 😠

#

but i did get to learn something new so i guess its all good

grand sand Jun 22, 2018, 4:31 AM

#

@wicked whale yeah . I re run it to make sure its working fine

#

I've run the setup command and the generate project files command

#

and now I'm building the source

#

Here is the output log

#

UBT not able to link rendercore.dll This error is coming. How to fix this ?

📎 unrealengine4builderror.JPG

tulip arch Jun 22, 2018, 5:41 AM

#

hi I'm wondering if anyone can give me any info on FPlatformRect? http://api.unrealengine.com/INT/API/Runtime/ApplicationCore/GenericPlatform/FPlatformRect/index.html

FPlatformRect

#

just what the left, right, bottom and top are actually defining

#

this is within FMonitorInfo http://api.unrealengine.com/INT/API/Runtime/ApplicationCore/GenericPlatform/FMonitorInfo/index.html

FMonitorInfo

Contains info on a physical monitor connected to the display device

#

which is in FDisplayMetrics, I'm trying to ascertain the order of monitors from left to right

#

unfortunately the MonitorInfo array in DisplayMetrics seems to be in order of monitor number, which isn't necessarily in order from lowest to highest horizontally

#

the order of monitors I'm testing on is 2, 1, 3

#

so yeah any info on if I'm looking in the right place in FPlatformRect would be appreciated, or if there's a better way to get the left to right order of monitors that would be great

grand sand Jun 22, 2018, 8:14 AM

#

guys I'm not able to fix this issue

#

1>------ Build started: Project: ShaderCompileWorker, Configuration: Development_Program x64 ------ 1>Using 'git status' to determine working set for adaptive non-unity build. 1>Performing 1 actions (9 in parallel) 1>[1/1] Link ShaderCompileWorker-RenderCore.dll 1>LINK : fatal error LNK1104: cannot open file 'D:\GitHubRepos\UnrealEngine\Engine\Binaries\Win64\ShaderCompileWorker-RenderCore.dll' 1>UnrealBuildTool : error : UBT ERROR: Failed to produce item: D:\GitHubRepos\UnrealEngine\Engine\Binaries\Win64\ShaderCompileWorker-RenderCore.dll 1>Total build time: 0.95 seconds (Local executor: 0.00 seconds) 1>D:\MVS2017Community\Common7\IDE\VC\VCTargets\Microsoft.MakeFile.Targets(44,5): error MSB3075: The command "..\..\Build\BatchFiles\Build.bat ShaderCompileWorker Win64 Development -WaitMutex -FromMsBuild" exited with code 5. Please verify that you have sufficient rights to run this command. 1>Done building project "ShaderCompileWorker.vcxproj" -- FAILED. ========== Build: 0 succeeded, 1 failed, 2 up-to-date, 0 skipped ==========

#

If I restart my system and then run (ue4.sln) this , its working fine, once I run my project. I get this error. There is nothing which has opened UE4 files behind this. Yet this problem is coming

limber jacinth Jun 22, 2018, 9:58 AM

#

@grand sand maybe the shaderworker is running/stale/crashed? or your permissions to edit the file are messed up. but tbh i have seen that error myself, always cleared itself though

lost linden Jun 22, 2018, 3:30 PM

#

Hey. Im trying to find more information on FScopedTransaction . I was wondering, does this mean when you add a new transaction instance, is it only scoped into the current function? ie. once the function ends, its like calling a Transaction->End(); ?

elder falcon Jun 22, 2018, 3:31 PM

#

https://i.imgur.com/MHePmWB.png

Imgur

#

yes

lost linden Jun 22, 2018, 3:32 PM

#

cool. it just confused me a little based on the older system that explicitly defined the begin and end

elder falcon Jun 22, 2018, 3:32 PM

#

it looks like it's just a simple wrapper for that

lost linden Jun 22, 2018, 3:39 PM

#

hmm . I have a checkbox in the details panel which uses a delegate for when it changes. It seems a scoped transaction here doesn't undo the physical press, obviously because the transaction is scoped within the delegate function. How would a transaction work in this situation?

shrewd thorn Jun 22, 2018, 4:11 PM

#

Generally transactions only track changes to the actual data/model, not to the UI. Then the UI changes to reflect the model. If it's a UObject you just need to call Modify on it to register it with the transaction

#

If it's not a UObject you'd probably have to do something weird like register for a callback, I haven't done that in awhile

lost linden Jun 22, 2018, 4:12 PM

#

yeah I was looking for a callback but I cant seem to find one, unless if(GUndo) { //does stuff } works

#

but then thats probably the wrong way to do it anyway

#

Its actually a Slate widget that im working with in the detail panel. It has no associated UPROPERTY that is transactional though, so I have to do it manually

#

maybe I can write a listener on the data for changes and refresh the detail panel manually

#

hmm something I just noticed. If you compile a blueprint, it causes the CustomizeDetails() function, in a detail customization, to be called twice.

gloomy hamlet Jun 22, 2018, 6:01 PM

#

You'll probably find it's only called once per instance, but that for whatever reason the engine makes one instance, then immediately creates another and dumps the first.

#

That kind of stuff happens all over the engine. Property changes often result in 2 if not 3 construction script reruns for example.

lost linden Jun 22, 2018, 6:13 PM

#

fair enough 😃

#

Ironically, when you do an Undo command, it doesn't necessarily refresh CustomizeDetails(). But sometimes it does. Its strange

#

I need to find a delegate for when Undo/Redo happens anyway

gloomy hamlet Jun 22, 2018, 6:44 PM

#

I've found the undo/redo stuff in the editor so broken in general that I've never even attempted to implement it for my own stuff.

lost linden Jun 22, 2018, 6:54 PM

#

thats a shame. I need to make sure data integrity is 100% and without it I will probably have to do some awful hack

stable hemlock Jun 23, 2018, 6:12 PM

#

do you have to put in the plugins you want to use before you compile the engine or does it not matter?

stable hemlock Jun 23, 2018, 10:52 PM

#

@stable hemlock you can put in the plugins into the engine folder or the game folder, its recommended to put it into the game folder though because it's an extra step if you update engine source versions, like going from 4.19 to 4.20. to answer your specific question though, you can compile the engine first, and then gradually add plugins later after the fact if that's what you want to do. these are the folders paths for each: Engine -/[UE4 Root]/Engine/Plugins/[Plugin Name]/ and the game plugin path is Game - /[Project Root]/Plugins/[Plugin Name]/. if you add the plugin to the game folder, after you add in the plugins, you can generate a visual studio solution from the uproject file by right clicking it, and then building the game project in visual studio.

edgy hedge Jun 24, 2018, 5:30 AM

#

hey guys where is the documentation for UnrealBuildTool.exe and all the parameters/arguments u can pass to it?

#

i.e. I use something like this: UnrealBuildTool.exe KriegEditor Development Win64 -project="D:\Krieg 4.19\Krieg.uproject" -verbose but that's all I know and I'd like to see all the parameters I can pass

#

this is a wiki regarding RunUAT.exe

#

https://wiki.unrealengine.com/How_to_package_your_game_with_commands

How to package your game with commands

#

Also when you "rebuild" your game solution using Development Editor, what command is actually being run behind the scenes?

#

I'm thinking of automating a lot of these commands using some Continuous Integration tools

spiral mortar Jun 24, 2018, 6:57 AM

#

@edgy hedge https://github.com/skymapgames/jenkins-ue4

GitHub

skymapgames/jenkins-ue4

jenkins-ue4 - Automated Unreal Engine 4 Project Builds

#

http://jackknobel.com

Jack Knobel

Home

Jack Knobel

edgy hedge Jun 24, 2018, 1:48 PM

#

ty @spiral mortar

opaque aspen Jun 24, 2018, 2:22 PM

#

Question: in 4.19 was there a change in the execution order? In 4.18 the order for BeginPlay in my project in Play in New Editor Window was Controller -> GameState -> Level BP -> Actors preplaced in Level. After upgrading to 4.19 it became: Actors preplaced in Level -> Level BP -> GameState -> Controller.

edgy hedge Jun 24, 2018, 4:06 PM

#

what command is run when you double click .uproject when you have no Intermediate folder or Binaries?

still willow Jun 25, 2018, 1:39 PM

#

Hello guys, a friend is writing his own engine and I want to help him write an Actor object which can have a tree of children. How would you go about that architecturally?

regal yoke Jun 25, 2018, 6:07 PM

#

I’m trying to find where a certain UI_COMMAND is run. I can find a bunch of code defining it but I seriously can’t find where the actual logic behind the command is. It’s the command that centers the pivot on the actor. It’s in the right click menu but I want to bind a keyboard shortcut to it.

#

Anyone know that or how to add custom keyboard shortcuts?

elder falcon Jun 25, 2018, 6:10 PM

#

what's it called?

regal yoke Jun 25, 2018, 7:38 PM

#

@elder falcon MovePivotToCenter

elder falcon Jun 25, 2018, 9:00 PM

#

well the actual command is found pretty easily using VA find references, but I'm not sure if this will help you with assigning a shortcut to it

#

https://i.imgur.com/inY15tq.png

Imgur

regal yoke Jun 26, 2018, 4:55 PM

#

@elder falcon yeah I already found that. I just don’t know how to set up a shortcut. I maybe could add it to the keybindings editor but I don’t know how to do that yet

lapis wave Jun 27, 2018, 6:53 AM

#

Does anyone know how's the progress on python editor scripting? I remember I saw it's going to be released with 4.20. But seems the preview releases don't have it. Thanks in advance!

stable hemlock Jun 27, 2018, 11:43 AM

#

anyone know how disable pdb generation?

elder falcon Jun 27, 2018, 11:51 AM

#

why would you want to? you need those to debug crashes, and use the debugger at all basically

stable hemlock Jun 27, 2018, 12:50 PM

#

nope i dont need it

#

just tell me how disable this

#

#

so i disabled this?

bronze crest Jun 28, 2018, 6:54 AM

#

[2018.06.28-06.50.20:444][323]LogWmfMedia: Verbose: Session 000001F63BF2EF00: Created
[2018.06.28-06.50.20:444][323]LogWmfMedia: Verbose: Player 1f62fd0a020: Initializing file://../../../../../../../FULLPATH.mp4 (archive = no, precache = no)
[2018.06.28-06.50.20:444][323]LogWmfMedia: Verbose: Session 000001F63BF2EF00: Initializing media session (LowLatency: 0)
[2018.06.28-06.50.28:598][323]LogWmfMedia: Verbose: Session 000001F63BF2EF00: Setting rate to 1.000000
[2018.06.28-06.50.42:375][323]LogWmfMedia: Verbose: Session 000001F63BF2EF00: Presentation clock ready
[2018.06.28-06.50.54:372][323]LogWmfMedia: Verbose: Session 000001F63BF2EF00: Rate control ready
[2018.06.28-06.51.14:871][323]LogWmfMedia: Verbose: Session 000001F63BF2EF00: Rate support ready
[2018.06.28-06.52.35:250][323]LogWmfMedia: Verbose: Tracks: 000001F636A749D0: Shutting down (media source 0000000000000000)
[2018.06.28-06.52.35:250][323]LogWmfMedia: Verbose: Tracks: 000001F636A749D0: Initializing (media source 000001F64613AE00)
[2018.06.28-06.52.35:250][323]LogWmfMedia: Verbose: Tracks 000001F636A749D0: Found 1 streams
[2018.06.28-06.52.35:251][323]LogWmfMedia: Verbose: Tracks 000001F636A749D0: Major type of stream 0 is Video
[2018.06.28-06.52.35:251][323]LogWmfMedia: Verbose: Session 000001F63BF2EF00: The rate 1.000000 is not supported

#

@gray bay I get that when I try to start playing a video through the new media framework, manually, not using the UMediaPlayer etc stuff. why does it say The rate 1.000000 is not supported?

#

I did create my own class inheriting from IMediaOptions, created a FMediaPlayerFacade and called Open() on that with a URL and my custom options. Then I call AddVideoSampleSink() on the PlayerFacade and then SetRate(1.f) to start playing the video, which fails due to the problem above

#

this is my code:

📎 unknown.png

#

the UMediaSource is only there since that was the easiest way for me to get the correct URL into there

#

spent the last 3.5 hours reading through the media framework code to try to understand how to use it like that, without dependency on UMediaPlayer and those other UObjects

#

is my code there correct?

#

I looked at why the rate 1.0 is not supported, and its because ThinnedRates and UnthinnedRates are both Empty in WmfMediaSession.cpp

#

so it thinks that it doesnt support any rates

#

but why?

#

just for testing, I added a call to UpdateCharacteristics() before it checks if the rates are supported, so the log output above includes the output of UpdateCharacteristics(). but that call didnt change anything

#

I've tried that since UpdateCharacteristics seems to be the only function where ThinnedRates and UnthinnedRates are filled, and the problem seems to be that they are not correctly filled

open zodiac Jun 29, 2018, 1:22 PM

#

building from engine source. Cloned from git, run setup.bat & generateprojectfiles.bat and getting build errors. Anything I am missing?

open zodiac Jun 29, 2018, 2:02 PM

#

getting sharedpch.core.cpp - no such file or directoyr

spiral mortar Jun 29, 2018, 6:50 PM

#

Why do you want to disable it @stable hemlock

spiral mortar Jun 29, 2018, 7:11 PM

#

Ah

#

@stable hemlock

#

Comment that line:

#

https://github.com/EpicGames/UnrealEngine/blob/08ee319f80ef47dbf0988e14b546b65214838ec4/Engine/Source/Programs/UnrealBuildTool/Platform/Windows/VCToolChain.cs#L832

#

Just comment it

#

And rebuild UBT (there's a csproj)

#

You don't even need source for that

elder falcon Jun 29, 2018, 11:07 PM

#

why does 4.20 have 500000 more symbols in VA than 4.19?

elder falcon Jun 30, 2018, 10:55 AM

#

that's the wrong way to disable it

#

that way ubt still expects it to make a pdb

#

you could try by setting the 2 public bool bCreateDebugInfo in LinkEnvironment.cs and CppCompileEnvironment.cs to false

slow pendant Jun 30, 2018, 1:50 PM

#

anyone has a possible fix for this? https://issues.unrealengine.com/issue/UE-48546

sterile kite Jul 1, 2018, 3:04 PM

#

The compile button does nothing. Unreal Engine 4.18.3 from Source. Any ideas on how to fix it?

limber jacinth Jul 1, 2018, 5:26 PM

#

don't use the compile button in the editor?

#

hates hot-reloading (too many horrors) :D

gray bay Jul 1, 2018, 5:44 PM

#

@bronze crest sorry for my delayed response - I'm currently on a sabbatical

#

your code is almost correct

#

the problem is that opening a media source is an asynchronous operation that can take considerable time

#

by the time you call SetRate(), the opening is not yet complete

bronze crest Jul 1, 2018, 5:45 PM

#

@gray bay ooh, you're still here 😄

gray bay Jul 1, 2018, 5:45 PM

#

you have to hook into the event notification mechanism of the media player and call SetRate() only on OnMediaOpened

#

in the low-level API there's OnMediaEvent or something like that

bronze crest Jul 1, 2018, 5:47 PM

#

@gray bay I did find that my problem was mostly caused by this missing:

#

MediaModule->GetClock().AddSink(PlayerFacade.ToSharedRef());
MediaModule->GetTicker().AddTickable(PlayerFacade.ToSharedRef());

#

and then doing SetRate delayed

#

so I ended up with this:

#

📎 unknown.png

gray bay Jul 1, 2018, 5:48 PM

#

yes, you also need to register player facade with the media clock, otherwise it won't get ticked

#

you can delay the call to SetRate, but it's better to make it event-driven

bronze crest Jul 1, 2018, 5:48 PM

#

but I then ended up with a problem that made me think I can never get that to work nicely

gray bay Jul 1, 2018, 5:49 PM

#

you also don't need CustomMediaOptions. you could simply have your CustomMediaPlayer implement that interface and pass in this

bronze crest Jul 1, 2018, 5:49 PM

#

ah, right

#

but the problem that made me give up then was this, maybe you can tell me how to do that

#

25 times per second, I would try to get the current IMediaTextureSample from the SampleQueue

#

but the IMediaTextureSample only contains the raw buffer, and not a texture

gray bay Jul 1, 2018, 5:51 PM

#

this is what you want to hook into for the event based API: https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Source/Runtime/MediaUtils/Public/MediaPlayerFacade.h#L583

bronze crest Jul 1, 2018, 5:51 PM

#

and the code for getting a texture out of the raw buffer seems to be very much built to only work with the UMedia stuff

gray bay Jul 1, 2018, 5:52 PM

#

you are right about that

#

i didn't get to refactoring the texture sample conversion code out of the UMediaTexture/FMediaTextureResource and into a reusable lower-level class

bronze crest Jul 1, 2018, 5:53 PM

#

and I can't really make any use out of the raw buffer, I need a FRHITexture

gray bay Jul 1, 2018, 5:53 PM

#

i no longer work on the Engine, and i doubt that anyone else will make this change

#

the best you can do is to duplicate that code

#

the media texture samples are not just raw buffers. what they store is platform and player dependent

#

on Windows using WMF, they contain copies of the frame buffers in raw CPU memory

#

on other platforms they may contain pointers to textures on the GPU, or handles to hardware samplers

#

even when they store raw memory like in WMF, the format depends on the video you're playing

bronze crest Jul 1, 2018, 5:55 PM

#

I found that the code I need is pretty much in FMediaTextureResource::Render

gray bay Jul 1, 2018, 5:55 PM

#

correct

#

that function will determine what the texture sample actually consists of, and it will then perform the corresponding conversion operations

#

there's quite a bit of logic there to accommodate for the various platform and pixel format differences, but with some patience you should be able to figure it out. it' s not rocket science.

bronze crest Jul 1, 2018, 5:57 PM

#

but it also has to run on the render thread, which means if the engine stalls for a few seconds, it wouldn't actually do the conversion to the texture any more, right?

gray bay Jul 1, 2018, 5:58 PM

#

i'm not sure what you mean by that

#

the render and game threads are coupled

bronze crest Jul 1, 2018, 5:59 PM

#

if the game thread is doing something that takes 10 seconds (so it stalls) the render thread will also not really run since it only wants to be a few frames behind

gray bay Jul 1, 2018, 5:59 PM

#

the render thread may be a frame behind the game thread, but it will still execute any enqueued commands

#

ah ok, yes, that is correct

bronze crest Jul 1, 2018, 6:00 PM

#

you mean even if I do a Thread.Wait(10 seconds) in the GT, the RT will still convert my textures every tick just fine?

gray bay Jul 1, 2018, 6:01 PM

#

it will do every tick, but that tick will take 10 seconds

bronze crest Jul 1, 2018, 6:01 PM

#

well, yeah, so what I expected

#

the reason for doing this manually is that I hoped I could get a 100% smooth media playback while I'm loading a new level. the engine is doing slow stuff while it loads a level, and I'm also doing stuff like spawming 2000 actors in 1 frame to fill up my pools and similar stuff. I hoped going away from the UMedia stuff and using the underlying media framework directly would make it only depend on some media framework threads (and I can start it in the old level, and stop it in the new level without playback ever being affected)

#

so that I could nicely send a new texture to SteamVR 30 times a second, and due to the SteamVR compositor doing its own rendering it would look fully smooth

#

SteamVR just takes a native texture resource pointer and displays that texture

#

and you can update that texture as often as you want, it will just keep displaying that until you update it again

gray bay Jul 1, 2018, 6:12 PM

#

we had plans to replace the legacy startup movie framework with media framework, which would have supported this use case

#

i'm not sure when that will happen now

#

in principle, what you're trying to do is possible, but it will take some work

#

since the game thread is busy, something else needs to tick the media framework

#

on the rendering side there shouldn't be any major problems, because that already works for loading screens and stuff like that

#

the legacy startup movie player spawns a separate thread that processes video frames, if i remember correctly

bronze crest Jul 1, 2018, 6:15 PM

#

hm

#

you mean there shouldnt be any major problems with calling that code in Render() from a non-RT thread?

gray bay Jul 1, 2018, 6:16 PM

#

take a look at the what the MoviePlayer implementation does

#

it's still rendering on the render thread, i think

bronze crest Jul 1, 2018, 6:19 PM

#

I remember you mentioned the old startup movie framework would be replaced with the new media framework

#

I hoped the media framework would be setup for that already

#

do you think the new media framework will go into a "legacy code mode" now without you? so no new features etc, just getting maintained?

quaint adder Jul 1, 2018, 8:52 PM

#

anyone familiar with how to get dependencies (like libfbxsdk.dll) copied automatically to a staging build dir? \

elder falcon Jul 2, 2018, 9:25 AM

#

I think there are some things you can set in the build.cs file to achieve that

#

check out how the engine does it for some of the dlls it copies by default

quaint adder Jul 2, 2018, 5:13 PM

#

yeah, looks like Setup.bat does a dependency check , looking into installed builds, basically trying to avoid having artists having to compile all the time , but might be unavoidable :/

wary drum Jul 3, 2018, 5:25 PM

#

how do I get eulers number?

#

isn't there a global constant or something?

spiral mortar Jul 3, 2018, 5:26 PM

#

@wary drum

📎 unknown.png

#

Engine\Source\Runtime\Core\Public\Math\UnrealMathUtility.h

wary drum Jul 3, 2018, 5:26 PM

#

Thanks

#

I knew about PI but I didn't know where it was defined

#

thank you very much

gray bay Jul 4, 2018, 3:24 AM

#

@bronze crest no idea what the plans are, sorry

#

@quaint adder check the RuntimeDependencies property in Build.cs files

bronze crest Jul 4, 2018, 3:26 AM

#

@gray bay ok, thanks very much for still answering my questions about it! I'll just keep using it same as before then, through the UMedia stuff

#

seems to make the most sense for now

quaint adder Jul 4, 2018, 3:50 AM

#

OK ...

bronze crest Jul 5, 2018, 5:47 AM

#

📎 unknown.png

#

is it UnrealEngine or FortniteEngine? 😛

spiral mortar Jul 5, 2018, 10:04 AM

#

lol

timid otter Jul 6, 2018, 11:35 AM

#

Probably find some paragon in there too

pulsar urchin Jul 7, 2018, 5:56 AM

#

guys I feel UE4 is compiling all modules (Core, CoreUObject, ..) for each shipping project separately is that true?

brisk silo Jul 7, 2018, 8:42 AM

#

1>Creating makefile for ShaderCompileWorker (no existing makefile)
1>EXEC : error : System.IO.FileNotFoundException: Could not find file 'K:\DWVR_Redux\ShaderCompileWorker.uproject'.
1>File name: 'K:\DWVR_Redux\ShaderCompileWorker.uproject'
1>   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) ```

#

what the fuck is this

#

fisrt time i see this kind of errors, when trying to compile engine

#

could it be visual studio 2017 shanenigans?

sterile kite Jul 7, 2018, 11:22 AM

#

@bronze crest They modified some bits of the engine for Fortnite, probally Paragon too.

elder falcon Jul 7, 2018, 11:42 AM

#

@pulsar urchin yes

brisk silo Jul 7, 2018, 11:55 AM

#

ok this is really fucking weird

#

i get that same error on multiple different engine versions

#

but only if it compiles from my game

#

if it doesnt compile from my game it works fine

hidden hedge Jul 7, 2018, 1:32 PM

#

@pulsar urchin longer answer is yes, it compiles them as static libraries and links them into a single executable file

pulsar urchin Jul 8, 2018, 6:16 AM

#

@hidden hedge but I don't see any .lib file. It seems only .obj file is created and all of them make the final .exe

stable hemlock Jul 8, 2018, 2:22 PM

#

how i upgrade my engine source code with not downloading the code in git hub every time its realise a new version

elder falcon Jul 8, 2018, 2:32 PM

#

clone the repository properly

#

might want to look up a few git tutorials

stable hemlock Jul 8, 2018, 2:37 PM

#

@elder falcon thanks

sick basin Jul 8, 2018, 4:35 PM

#

not really a big issue but where is my editor hotkey config stored? so far I've tried

Engine/Saved/Config/Windows

Game/Saved/Config/Windows
Game/Config```
And none of these. I'm slowly going insane ![linkAngry](https://cdn.discordapp.com/emojis/340428359055966209.webp?size=128 "linkAngry")

spiral mortar Jul 8, 2018, 4:50 PM

#

@sick basin AppData\Local\UnrealEngine\4.19\Saved\Config\Windows\EditorKeyBindings.ini

#

What would you do without me 🙃

sick basin Jul 8, 2018, 4:51 PM

#

lirikLEWD

#

I got a stalker!

#

how sweet

spiral mortar Jul 8, 2018, 4:53 PM

#

hehe

sick basin Jul 8, 2018, 4:53 PM

#

rareobese

spiral mortar Jul 8, 2018, 4:53 PM

#

voxelcat

sick basin Jul 8, 2018, 4:54 PM

#

by the way wtf Epic is that necessary

stable hemlock Jul 9, 2018, 4:36 PM

#

so i have a bug in one of my blueprints (creates some procedural meshes from bp) that make the editor crash if i drop them into the map (they get a tick due to "realtime" in editor) but now i also cant edit the bp because whenever i go into the blueprint inspector, they also get a tick from the realtime setting being default.

#

is there any way around this? make the bp inspector viewport not "realtime" on default somehow?

#

basically have this unchecked by default

📎 dfsgfdsg.png

gloomy hamlet Jul 9, 2018, 5:22 PM

#

@stable hemlock I think it's saved in one of the ini files, but I couldn't tell you which.

stable hemlock Jul 9, 2018, 5:27 PM

#

Seems like a really critical design flaw from ue side; makes any bp that crashes impossible to fix

gloomy hamlet Jul 9, 2018, 5:51 PM

#

The approach they take is that it shouldn't be possible to cause a crash by doing something in a blueprint. If it does, it's because of a bug in the C++, either engine or you own.

#

So it's something that needs to be fixed on the C++ side, not within the BP itself.

stable hemlock Jul 9, 2018, 7:50 PM

#

i access some array in blueprints and it throws a nullpointer

#

this happens on the constructor so it happens instantly i switch into the inspector

elder falcon Jul 9, 2018, 7:56 PM

#

I tried, it does not work

#

program only works in engine/source/programs folder

#

I ended up not doing it

#

you could do it in the engine folder

#

it works fine there

#

🤔

#

well, only one person has to build your crash reporter right?

brisk silo Jul 10, 2018, 8:44 AM

#

im going to try to implement a low overhead forward shading model

#

that skips all lighting and some extra stuff, but still keeps the lightmaps

#

something like the SimpleForward but as a shading model and a bit better

royal glacier Jul 10, 2018, 8:46 AM

#

woh

#

would be pretty awesome for mobile VR

brisk silo Jul 10, 2018, 8:46 AM

#

i tried SimpleForward, but it was too ugly

#

and it affected my guns

#

wich i dont want to get affected

#

in my game, the environment is 100% fully static, so i want to implement a shading model that just uses lightmap and absolutely nothing else

#

should save a good chunk of pixel perf

#

the absolute best case would be to use the mobile renderer in ps4

royal glacier Jul 10, 2018, 8:47 AM

#

you can ?

brisk silo Jul 10, 2018, 8:47 AM

#

but i remember even simpleforward went to shit on ps4 due to missing shaders

#

no

royal glacier Jul 10, 2018, 8:47 AM

#

🤔

brisk silo Jul 10, 2018, 8:47 AM

#

not without considerable engine editing

#

and the mobile shaders are completely untested on ps4

#

for the GLES render path

#

it would really be the best case scenario, but shit happens

#

if i could use the mobile renderer, i could lower gpu cost by half

#

minimum

#

allowing me to run at 120 fps in a ps4

#

like an absolute fucking madman

royal glacier Jul 10, 2018, 8:49 AM

#

you doing 60 interp right now right ?

brisk silo Jul 10, 2018, 8:49 AM

#

for base ps4

#

Pro is native 90

#

but the main bottleneck of ps4 base was CPU

#

my enemies were too costly

#

ive done an optimization pass and lowered their cost by 30%, wich is the CPU differential

#

so now i should be able to upgrade base to 90

royal glacier Jul 10, 2018, 8:50 AM

#

60 interp looks odd, too much remanence

brisk silo Jul 10, 2018, 8:50 AM

#

yes

#

as far as i know, DWVR is the only game in the whole PSVR lineup to have varying framerates depending on model

#

there is also another edit i want to try

#

straight up REMOVE the depth pass

#

on forward renderer

#

again, i do not use point lights at all. I just use directional + lightmaps

#

wich means the whole prepass + light compute shader.. is useless

royal glacier Jul 10, 2018, 8:52 AM

#

thats too deep into UE's source code for me

#

but if you manage to make a bare bone version of UE4's fwd renderer, please do share :p

brisk silo Jul 10, 2018, 8:59 AM

#

my idea is to literally comment out the "if(forward_render) depth_prepass"

#

and later, when its going to render the meshes, it uses Depth EQUALS as depth test

#

so have it be "normal"

#

of course, this will cause overdraw

#

no way around it

#

but maybe, with the simple lighting shader, i can improve things

#

it would 100% make the game so much more performant on pc

#

where im highly drawcall bound

#

for the lower cost shading model, i did that for my toon rendering stuff

#

📎 Toonshading.gif

#

this shader was like 1/3rd of the cost

#

but of course that was due to the extremelly simple light calculations, and the complete removal of a TON of stuff

#

looked pretty damn good on curved surfaces, but it needed some art direction i do not have, so that project got scrapped

#

now gonna go forward with it

#

first step of engine render hacking

#

actually build a test suite

#

so i can run the test suite and see what pixels changed

brisk silo Jul 10, 2018, 10:04 AM

#

📎 unknown.png

#

greyed out

#

wtf unreal let me add the screenshots

brisk silo Jul 10, 2018, 10:30 AM

#

ok you cant have screenshot testing without source control

gray glade Jul 10, 2018, 10:13 PM

#

Without source control... or without writable files?

#

Wouldn't be surprised if it assumes you need source control if the files aren't writable.

stable roost Jul 11, 2018, 12:01 AM

#

i need help regarding ue4 source code workflow, someone plz?

elder falcon Jul 11, 2018, 12:03 AM

#

what does that even mean

#

do you have a specific problem

stable roost Jul 11, 2018, 12:04 AM

#

1st thanks for your interest! 😃

#

https://github.com/googlevr-unreal/UnrealEngine , i want to use this source version for compiling google vr plugin

elder falcon Jul 11, 2018, 12:05 AM

#

well, clone it and follow the official instructions for how to build it?

stable roost Jul 11, 2018, 12:06 AM

#

yes am aware of that. what i want to know is

#

how can i compile this plugin's version and use it on my project on launcher version

#

what i need to work in my project are only the binaries for win64/adnroid/ios?

#

am sleepless alsmost 2 days , please i need help

#

😃

elder falcon Jul 11, 2018, 12:09 AM

#

that's not how it works, if you compile this engine then you need to use your source build to work on the project

#

can't just copy parts of it to a different version

stable roost Jul 11, 2018, 12:10 AM

#

so there's no way to do this. so i need to use this version to open a copy of my project ?

#

its a bp, not c++

#

?

stable roost Jul 11, 2018, 12:34 AM

#

Can Someone From EPIC respond?

wispy shuttle Jul 11, 2018, 3:15 AM

#

📎 unknown.png

#

Not seeing 'generate project files' or any other UE-specific options on project > right click

elder falcon Jul 11, 2018, 3:16 AM

#

run the UnrealVersionSelector thing somewhere in Binaries to register shortcuts

wispy shuttle Jul 11, 2018, 3:17 AM

#

Ah gotcha, thank you

hollow kernel Jul 11, 2018, 4:58 AM

#

Is there anyone here that doesn't use Visual Assist?
Afaict, it's a must. I'm just curious if some people can navigate source more efficiently without it (using built in tools, like intellisense, alone).

wispy shuttle Jul 11, 2018, 5:34 AM

#

📎 unknown.png

#

Anyone know what these are for? They don't cause any real problems as far as I can tell so far, the project opens and everything works. This shows up when I try to gen project files

brisk silo Jul 11, 2018, 7:45 AM

#

@gray glade it needs source control enabled

#

i configured perforce and then it worked

oak linden Jul 11, 2018, 8:35 AM

#

Hello fellow unreal slackers, anyone here has a terrible hard time with Intelisense errors with the source version of UE4?

bla.generated.h does not exists
GENERATED_BODY() allso give me an error in every headers

The game still build properly but if I open any cpp file, compiles fails

spiral mortar Jul 11, 2018, 1:08 PM

#

@oak linden Works fine after one build, as the generated files are generated

#

GENERATED_BODY use the line number as id, so if it moves intellisense won't find it

#

@hollow kernel Hard to do

#

There's Ctrl T in VS to search symbol, but it's not as good as VAX

stable roost Jul 11, 2018, 2:17 PM

#

i taking the clean vs install, are those adequate from build ue4 source?

📎 a1.PNG

elder falcon Jul 11, 2018, 2:37 PM

#

you also need .net desktop development

#

since the build tools are written in c#

stable roost Jul 11, 2018, 3:50 PM

#

is this ok? should i choose Y or N? i guess (no) to get certain build?

📎 a2.PNG

elder falcon Jul 11, 2018, 3:58 PM

#

y

#

I guess?

#

check if there are any specific instructions

stable roost Jul 11, 2018, 4:06 PM

#

there are no specific instruction ( i guess there should be) its just a copy paste from ue4 github

elder falcon Jul 11, 2018, 4:07 PM

#

if you immediately got this when running setup.bat after clone then it may be that they have intentionally modified these and you should be pressing n

stable roost Jul 11, 2018, 4:07 PM

#

yes that happend

#

It may take anywhere between 10 and 40 minutes to finish compiling, depending on your system specs OR MAYBE THEY MEAN 1,5 HOUR ???

elder falcon Jul 11, 2018, 4:18 PM

#

if your pc is shit it can easily take multiple hours

#

for me it takes 15 minutes

#

more cores = better

stable roost Jul 11, 2018, 5:22 PM

#

UnrealBuildTool : error : UBT ERROR: Failed to produce item: C:\UnrealEngine-4.19-googlevr\UnrealEngine-4.19-googlevr\Engine\Plugins\Online\OnlineSubsystemGoogle\Binaries\Win64\UE4Editor-OnlineSubsystemGoogle.dll
4>Total build time: 3393.42 seconds (Local executor: 0.00 seconds)
4>C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VCTargets\Microsoft.MakeFile.Targets(44,5): error MSB3075: The command "....\Build\BatchFiles\Build.bat UE4Editor Win64 Development -WaitMutex -FromMsBuild" exited with code 5. Please verify that you have sufficient rights to run this command.
4>Done building project "UE4.vcxproj" -- FAILED.
========== Build: 3 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

#

are you aware of this FAIL?

elder falcon Jul 11, 2018, 5:24 PM

#

the actual error must be further up

#

this message only tells you something failed

stable roost Jul 11, 2018, 5:25 PM

#

https://pastebin.com/C052J85e

Pastebin

1>------ Build started: Project: DotNETUtilities, Configuration: D...

elder falcon Jul 11, 2018, 5:26 PM

#

https://i.imgur.com/OWmMCfM.png

Imgur

#

looks like their stuff is broken

#

🤷

stable roost Jul 11, 2018, 5:27 PM

#

ok so subsystem is broken?

#

is there any chance i can use github 4.19 ,and copy the googleVR's plugin from this source build?

elder falcon Jul 11, 2018, 5:29 PM

#

if it was that easy they would just be distributing a plugin instead of a custom engine version

#

there are likely major changes to the engine source

#

required to make the thing work

stable mantle Jul 11, 2018, 9:19 PM

#

hello, does anyone know about pictures, videos, tutorial, power-points, etc that explain the engine's architecture as a whole? I'm more of a visual thinker, so anything with diagrams, UML, would be very nice, please

#

someone just going through the source and explaining it would be brilliant too

spiral mortar Jul 11, 2018, 9:23 PM

#

https://www.blaenkdenum.com/notes/unreal-engine/

Unreal Engine - Blaenk Denum

AKA Blaenk Denum

stable mantle Jul 11, 2018, 9:23 PM

#

aaaah, the end of despair upon me 😄

#

thanks @spiral mortar 😃

wispy shuttle Jul 11, 2018, 11:12 PM

#

📎 unknown.png

#

I'm trying to create a GameServer.Target.cs file but when I tried to duplicate an existing .cs file (to replace its contents), it wouldn't show up in VS.

#

Trying to create a new item doesn't let me create a .cs file either.

#

Anyone know why?

elder falcon Jul 11, 2018, 11:13 PM

#

regenerated project files after this?

#

that's exactly how I originally created our Server.Target.cs and it worked just fine

#

I'm not sure if it already needs to have valid contents at the time you regenerate project files

wispy shuttle Jul 11, 2018, 11:15 PM

#

@elder falcon I just duplicated the Editor.Target.cs file and changed the contents to the correct ones (from the Epic docs) and then generated project files

#

But,

#

📎 unknown.png

#

I've been running into this when I try to generate project files ever since I moved my entire engine & project folder to my SSD

elder falcon Jul 11, 2018, 11:16 PM

#

run the unrealversionselector thing in your engine/binaries folder

#

then on the uproject change engine version

#

and it should work again

#

?

wispy shuttle Jul 11, 2018, 11:17 PM

#

one sec

#

hmm the registration of the directory was successful but,

#

those errors still appear

#

I tried deleting appdata folders, deleting saved/interm folders, re-building the engine and project files

#

no luck

#

doing a search for aqprof.dll in my original directory

elder falcon Jul 11, 2018, 11:19 PM

#

those warnings are normal, it's just support for some optional profiling tools

#

they're unrelated

wispy shuttle Jul 11, 2018, 11:19 PM

#

ah okay

#

how did you create your server.cs file?

#

from scratch?

elder falcon Jul 11, 2018, 11:19 PM

#

copy pasted the game one and added Server to the name

#

also make sure you rename the target in it

#

GameTarget -> GameServerTarget

wispy shuttle Jul 11, 2018, 11:20 PM

#

📎 unknown.png

elder falcon Jul 11, 2018, 11:20 PM

#

what's all this stuff

wispy shuttle Jul 11, 2018, 11:20 PM

#

I copied and pasted it from the Epic documentation for setting up dedicated servers

elder falcon Jul 11, 2018, 11:20 PM

#

I just have

#

using UnrealBuildTool;
using System.Collections.Generic;

public class BrickadiaServerTarget : TargetRules
{
    public BrickadiaServerTarget(TargetInfo Target) : base(Target)
    {
        Type = TargetType.Server;
        ExtraModuleNames.Add("Brickadia");
        ExtraModuleNames.Add("BrickadiaOpenSSL");

        bUseChecksInShipping = true;
        bUseLoggingInShipping = true;

        if (Configuration == UnrealTargetConfiguration.Shipping)
        {
            bAllowLTCG = true;
        }
    }
}

wispy shuttle Jul 11, 2018, 11:20 PM

#

hmm..

#

What's "Brickadia" ?

elder falcon Jul 11, 2018, 11:21 PM

#

my game name

#

so you'd replace that with yours

wispy shuttle Jul 11, 2018, 11:21 PM

#

you using gamelift by any chance?

elder falcon Jul 11, 2018, 11:21 PM

#

nah

wispy shuttle Jul 11, 2018, 11:21 PM

#

okay I'll use this code - do I need the OpenSLL module as well or is that specific to your set-up

elder falcon Jul 11, 2018, 11:21 PM

#

that's just some project specific stuff

#

I had to use openssl lib for some crypto but it has overlapping names with some unreal stuff

#

so only option to use that is to make a new module that doesn't include any unreal stuff

wispy shuttle Jul 11, 2018, 11:23 PM

#

still not seeing the server.cs file in VS. I recently re-installed VS, maybe I missed something related to the .cs files

#

I did modify it to add C#

elder falcon Jul 11, 2018, 11:23 PM

#

you named it GameServer.Target.cs right

#

it should only show up after regenerating project files

wispy shuttle Jul 11, 2018, 11:24 PM

#

yes, in that case this "failed to generate project files" error might actually be failing the entire process and not just anything related to the errors inside

#

I did a search for aqProf.dll in my original directory, there's no file like that in there

#

this is strange

elder falcon Jul 11, 2018, 11:24 PM

#

you won't have that file unless you use that profiler

#

it's normal to not be found

wispy shuttle Jul 11, 2018, 11:24 PM

#

I've never encountered this error before though, have u?

elder falcon Jul 11, 2018, 11:24 PM

#

what's the full error?

wispy shuttle Jul 11, 2018, 11:24 PM

#

📎 unknown.png

elder falcon Jul 11, 2018, 11:25 PM

#

the message is cut off to the right

#

what path is it not finding

wispy shuttle Jul 11, 2018, 11:25 PM

#

was just looking at that, sec

#

📎 unknown.png

#

it's a log

#

I don't have an 'engine' folder on my Desktop

#

so weird

elder falcon Jul 11, 2018, 11:26 PM

#

did you ever have the engine directly on desktop?

#

that doesn't make sense

wispy shuttle Jul 11, 2018, 11:26 PM

#

📎 unknown.png

#

No, here's the layout

#

It was like this with 4.19PC being the root in my D Drive

#

Moved that 4.19PC folder directly to desktop

#

That's it.

elder falcon Jul 11, 2018, 11:27 PM

#

🤔

#

that's really strange

wispy shuttle Jul 11, 2018, 11:27 PM

#

it's strange that it threw an error for not finding a dated .log file

elder falcon Jul 11, 2018, 11:27 PM

#

I'm not seeing a .git folder there

wispy shuttle Jul 11, 2018, 11:27 PM

#

wait a minute

#

📎 unknown.png

#

This goes to look for an 'Engine' folder but look at the start of the path

#

it looks like maybe it's going back to desktop

#

then searching for it

#

it is that file mentioned at the end there

#

UnrealBuildTool wants it

#

tbh this is probably unrelated to the missing .dll files anyway

elder falcon Jul 11, 2018, 11:29 PM

#

like I said the missing dll files are completely unrelated, that's a normal thing to happen

daring bobcat Jul 12, 2018, 7:53 AM

#

Hi everyone, there is anyone who worked on HDR for xbox one?

elder falcon Jul 13, 2018, 2:06 PM

#

huh

#

did ubt change in 4.20 to print the output after actually doing the action

#

it now spends a very long time on this

#

https://i.imgur.com/N4QXiJd.png

Imgur

#

before quickly printing out these 3 https://i.imgur.com/LXOyGwk.png

Imgur

gray glade Jul 13, 2018, 3:28 PM

#

I've always seen it do that.

#

It's how I've tracked down which file is causing an Internal Compiler Error before. Which has been more than once, surprisingly.

elder falcon Jul 13, 2018, 3:35 PM

#

it looks like this is new in "ParallelExecutor" in 4.20, "LocalExecutor" prints the output immediately without waiting for the action to finish

gray glade Jul 13, 2018, 4:10 PM

#

Oh, sorry. I misunderstood precisely what you were referring to.

#

Printing out after versus before, rather than after versus not at all.

wicked whale Jul 13, 2018, 4:23 PM

#

If anyone happens to be familiar with low level interfacing UTextureRenderTargets, does setting the bGPUSharedMemory flag imply that you can only bind to the UAV of the FRenderTargetResource?

#

From what I know I can safely read back from the RT by binding the Texture slot to a shader with bGPUSharedMemory false, however now I want to write to the RT with a shader.

#

In retrospect I need to read and write to the RT in the same shader anyway so binding the UAV seems to be the straightforward solution... 🤔

#

Although I'm curious how writeback to the FTexture resource of the RT is managed normally

#

Looking into SceneCaptureComponent writing to the RT is handled within SceneCaptureRendering (specifically UpdateSceneCaptureContentDeferred_RenderThread) wherein the scene is written to a View of the SceneRenderer and then somehow that is duplicated over to the RT with CopyToResolveTarget, tbh I don't understand any of this

#

Interestingly neither SceneCaptureComponent nor SceneCaptureRendering reference the RT UAV so I'm guessing that's the wrong way to look at the problem

solid token Jul 13, 2018, 5:42 PM

#

Hello
I'm trying to integrate SDL2 on Windows as a different way to get controller input. Seeing how UE4 already uses SDL2 on Linux I figured I wouldn't need to do anything too fancy. So I've added SDL2 as a dependency in ApplicationCore.

        if ((Target.Platform == UnrealTargetPlatform.Win64) ||
            (Target.Platform == UnrealTargetPlatform.Win32))
        {
            AddEngineThirdPartyPrivateStaticDependencies(Target, 
                "XInput", // TODO: Remove this when SDL takes over
                "SDL2" // We're using SDL2 for better controller support
                );
        }

After adding this and a few SDL calls to test in ApplicationCore/Private/Windows/WindowsPlatformApplicationMisc.cpp, the engine seems to compile just fine but when it hits SDL_Init(), I get a "Module not found" exception. From here I'm not sure where to go...

elder falcon Jul 13, 2018, 7:26 PM

#

hm, maybe printing all output for each action at the end is actually a good thing? this ensures you always get the block of text for each action as a whole and not other output mixed in the middle

#

yeah especially if it's going to print a ton of errors from multiple files

bright olive Jul 13, 2018, 8:37 PM

#

for something implementing the sockets interface, do the names of the sockets and the socket transforms need to be knowable at CDO time?

#

I'm trying to add sockets to UMotionControllerComponent to support the standard steamvr offsets

#

like laser pointer, etc., but they aren't known until runtime and vary depending on which motion controller is being used

granite jolt Jul 14, 2018, 10:54 AM

#

anyone here working with UE4/Xbox One platform managed to fix the horrible mess about user/controller ID, pairing, etc., and cares to share his own solution?

elder falcon Jul 14, 2018, 5:32 PM

#

what is Blah.suppressed.lib ?

ebon ferry Jul 14, 2018, 8:21 PM

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Has anyone digged deeper into the Actor property replication mechanism?

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Or network stack in general?

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I've failed miserably trying to find documentation on the protocol / packet format

elder falcon Jul 14, 2018, 8:24 PM

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there is no documentation on the format, it just serializes bits in the order someone wrote in the code

ebon ferry Jul 14, 2018, 8:25 PM

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Theres gotta be a little more to it. Like .. information what actor and more specifically what actor property these bits belong to

elder falcon Jul 14, 2018, 8:25 PM

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which actor is defined by which UActorChannel the bunch is sent on

ebon ferry Jul 14, 2018, 8:26 PM

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But the package would have to include that information so the client receiving the replication knows the actor/property to apply these new bits on, right?

elder falcon Jul 14, 2018, 8:27 PM

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it writes the channel index somewhere in the packet

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for which property, that's going to be actor specific

ebon ferry Jul 14, 2018, 8:27 PM

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Hm. All I found on the format of a single bunch is like

elder falcon Jul 14, 2018, 8:28 PM

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you could start reading an unholy amount of code at UNetDriver::ServerReplicateActors

ebon ferry Jul 14, 2018, 8:28 PM

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A single comment in the ActorChannel.h

elder falcon Jul 14, 2018, 8:28 PM

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if it's a comment it might even be outdated

ebon ferry Jul 14, 2018, 8:28 PM

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I've actually read through most of that code path already

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So what I take from that is .. I'd actually have to examine the entire thing to figure out the format

pearl fulcrum Jul 14, 2018, 8:30 PM

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I would 0/10 trust a comment there

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the more specific to the code, the more likely its outdated

ebon ferry Jul 14, 2018, 8:30 PM

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I see

elder falcon Jul 14, 2018, 8:31 PM

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yeah basically

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why does the exact format matter?

ebon ferry Jul 14, 2018, 8:31 PM

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Im tryna teach it to my DPI engine

elder falcon Jul 14, 2018, 8:33 PM

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since they never intended this to be read by anything else, there won't be a clearly defined prototcol

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it's gonna have a lot of things that are sent or not sent depending on previous flags

ebon ferry Jul 14, 2018, 8:33 PM

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Considering the fact that the entire engine is open source, protocol documentation whouldnt hurt anyone tho

elder falcon Jul 14, 2018, 8:34 PM

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it would take time to write while it's not necessary for the engine to handle its own packets

ebon ferry Jul 14, 2018, 8:34 PM

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I guess

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Shouldnt be that much work actually

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Anyway

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I've pretty much read through all the code related to server side of replication. Do you happen to know where client/reaction code path kicks off?

elder falcon Jul 14, 2018, 8:39 PM

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UNetConnection::ReceivedRawPacket, called by UIpNetDriver::TickDispatch

ebon ferry Jul 14, 2018, 8:40 PM

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! The most unsettling thing I've found about the entire networking code in UE4 is how UNetDriver and UNetConnection both write to the socket with there own flavor of LowLevelSend

elder falcon Jul 14, 2018, 8:40 PM

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from there it will forward it to the correct channel which then does different things with it

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the one in the netdriver only seems to be used for replying to connectionless packets, like the connect challenge before a UNetConnection is created

ebon ferry Jul 14, 2018, 8:44 PM

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Makes sense .. thats probably while it needs to get an addresse passed as argument

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Well, thanks for elaborating. Gonna do some more digging

austere bronze Jul 15, 2018, 3:27 PM

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At package a game using a custom engine build, someone knows why the engine recompiles every single plugin on marketplace plugins at package ?

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every time I package, is there some way to fix this ?

stable hemlock Jul 15, 2018, 6:52 PM

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i gonna have problem to upgrade my project the 4.18.1 to 4.19.x

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????

spiral mortar Jul 15, 2018, 6:54 PM

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????

stable hemlock Jul 15, 2018, 6:54 PM

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i gonna problem if i upgrade my project the 4.18.1 to 4.19.x

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sorry its 4.19.2

idle creek Jul 15, 2018, 6:55 PM

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I upgraded 5 pet projects and no problem

spiral mortar Jul 15, 2018, 6:56 PM

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Same, should be fine

idle creek Jul 15, 2018, 6:56 PM

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4.18.3 - > 4.19.2

stable hemlock Jul 15, 2018, 6:56 PM

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i using the source code from github

idle creek Jul 15, 2018, 6:57 PM

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Can't see if there should there be any difference. Wait a little if somebody else had issue.

stable hemlock Jul 15, 2018, 6:57 PM

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ok

elder falcon Jul 16, 2018, 1:59 PM

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has anyone set up unreal with FASTBuild ?

stable hemlock Jul 16, 2018, 4:50 PM

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i don´t want download every time a new engine source code its release

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how i configure my visual studio 2017 to do it

stable hemlock Jul 16, 2018, 6:44 PM

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the version 4.19.2 works with visual studio 2015

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?????

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my engine source code its genering to use visual studio 2015 and not 2017

arctic kite Jul 16, 2018, 6:49 PM

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@stable hemlock There is a command-line switch to the generate batch. I think it's -2017 or -vs2017. It should be somewhere in the docs.

stable hemlock Jul 16, 2018, 6:50 PM

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but i can use the 2015 to this version of engine

arctic kite Jul 16, 2018, 7:07 PM

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yep

stable hemlock Jul 16, 2018, 7:09 PM

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thanks

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for now i gonna use the 2015

wicked whale Jul 17, 2018, 4:44 PM

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2>                           at UnrealBuildTool.UEBuildTarget.AddModulesToPrecompile() in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:line 3090
2>                           at UnrealBuildTool.UEBuildTarget.PreBuildSetup(UEToolChain TargetToolChain) in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:line 2663
2>                           at UnrealBuildTool.UEBuildTarget.Build(BuildConfiguration BuildConfiguration, CPPHeaders Headers, List`1 OutputItems, List`1 UObjectModules, ISourceFileWorkingSet WorkingSet, ActionGraph ActionGraph, EHotReload HotReload, Boolean bIsAssemblingBuild) in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:line 2021
2>                           at UnrealBuildTool.UnrealBuildTool.RunUBT(BuildConfiguration BuildConfiguration, String[] Arguments, FileReference ProjectFile, Boolean bCatchExceptions) in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:line 1480
2>                        (see ../Programs/UnrealBuildTool/Log.txt for full exception trace)```

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Never seen a UBT crash like this

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err, UBT error, not a crash

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Ah nevermind I had forgot to regenerate project files 🤦

spiral mortar Jul 17, 2018, 4:48 PM

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hehe

wicked whale Jul 17, 2018, 4:55 PM

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OK so GenerateProjectFiles.bat is failing out with the same error 🤔

#

            at UnrealBuildTool.UEBuildTarget.AddModulesToPrecompile() in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:line 3090
            at UnrealBuildTool.UEBuildTarget.PreBuildSetup(UEToolChain TargetToolChain) in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:line 2663
            at UnrealBuildTool.UEBuildTarget.Build(BuildConfiguration BuildConfiguration, CPPHeaders Headers, List`1 OutputItems, List`1 UObjectModules, ISourceFileWorkingSet WorkingSet, ActionGraph ActionGraph, EHotReload HotReload, Boolean bIsAssemblingBuild) in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\Configuration\UEBuildTarget.cs:line 2021
            at UnrealBuildTool.UnrealBuildTool.RunUBT(BuildConfiguration BuildConfiguration, String[] Arguments, FileReference ProjectFile, Boolean bCatchExceptions) in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\UnrealBuildTool.cs:line 1737
            at UnrealBuildTool.ProjectFileGenerator.GenerateIntelliSenseData(String[] Arguments, List`1 Targets) in C:\Users\Nicholas\Documents\UE4_Source_Master\UnrealEngine\Engine\Source\Programs\UnrealBuildTool\ProjectFiles\ProjectFileGenerator.cs:line 1736```

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For reference

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I should note I haven't had any issues compiling from source since a week ago, only now I'm getting up to date version of 4.20

wicked whale Jul 17, 2018, 5:21 PM

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Resolved the issue after looking at UBT log. The error says nothing about the issue which is a missing plugin. I had removed the plugin earlier due to a bug with a missing dependency for it, however since that was resolved that plugin was listed as a requirement for the build somewhere (not sure how that works.) Anyway restoring the plugin fixed it

spiral mortar Jul 17, 2018, 5:21 PM

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yay!

novel mantle Jul 18, 2018, 2:56 PM

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Anyone know which Nvidia technology like waterworks, flex , etc, work with an AMD gpu in editor?

#

Okay so Flex is AMD ready, what about the other stuff?

#

Apparently everything except waterworks, works on AMD

novel mantle Jul 18, 2018, 4:58 PM

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damn ue4 is 41gb on disk when compiled from source? (using nvidia flex branch)

elder falcon Jul 18, 2018, 5:03 PM

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mine is currently 80GB from building various targets

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reserve a lot of space

long wave Jul 18, 2018, 9:48 PM

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Has anybody managed to make a working installed build of 4.20 yet?

#

Build Graph keeps failing for me because of missing Magic Leap / Lumin dependencies or something

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Praying that setting HostPlatformOnly to true will make it work

elder falcon Jul 18, 2018, 10:01 PM

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does 4.20 use the exact same linux cross compile toolchain as 4.19?

long wave Jul 18, 2018, 10:24 PM

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Arghhhhhh now linux is giving me grief. What's Binaries/Linux/Dump_syms.exe supposed to be?

elder falcon Jul 18, 2018, 10:26 PM

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a thing for the new way to handle debug symbols on linux

long wave Jul 18, 2018, 10:26 PM

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ugh. It's causing my build to fail because it doesn't exist, even though I'm not building for Linux

elder falcon Jul 18, 2018, 10:26 PM

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🤔

long wave Jul 18, 2018, 10:26 PM

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I swear they don't test this system before they do a patch

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So... the offending line is in InstalledEngineFilters.xml

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If you're building for Win64, it'll try to drag in Linux dependencies

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Which if you want to save space.. you won't download

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ffs

elder falcon Jul 18, 2018, 10:35 PM

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I mean it makes some vague sense at least, that file is useful if you're building for linux with cross compiling

long wave Jul 18, 2018, 10:36 PM

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True, I just wish it would also check that you're actually remotely interested in doing anything with linux

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hopefully this is the last piece of the puzzle...

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Copying 96,515 files... this could be good

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YEA BOI

next mason Jul 18, 2018, 11:09 PM

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Has anyone got this error when trying to upgrade to 4.20?

#

cannot convert argument 1 from 'FUniqueNetIdRepl' to 'TSharedPtr<const FUniqueNetId,0>'

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I am trying to call HostGameSession in LocalPlayer

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(pSteamBeaconGameSession->HostGameSession(LocalPlayers[0]->GetPreferredUniqueNetId(), MapNameString, MaxPlayers))

elder falcon Jul 18, 2018, 11:16 PM

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VA 2283 fails with 4.20, it's showing symbols from both my source build and a completely unrelated launcher build at the same time

spiral mortar Jul 18, 2018, 11:18 PM

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@elder falcon VA is caching symbols

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Happens to me when I switch UE version on a project

elder falcon Jul 18, 2018, 11:19 PM

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any clue how to fix it?

spiral mortar Jul 18, 2018, 11:19 PM

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Yes

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Go to Appdata/smthg/smthg

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And do shift delete

elder falcon Jul 18, 2018, 11:19 PM

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🤔

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so it's actually broken and not just me doing it wrong?

spiral mortar Jul 18, 2018, 11:20 PM

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Well not really broken

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Just cache

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So you have to clear the cache

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There might be a UI button

elder falcon Jul 18, 2018, 11:20 PM

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seeing symbols from a different solution in this one seems very broken to me

spiral mortar Jul 18, 2018, 11:20 PM

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Ah

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Not UE symbols?

elder falcon Jul 18, 2018, 11:21 PM

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it's showing symbols from my source build and from a launcher build I installed earlier at the same time https://i.imgur.com/Qxomw9p.png

Imgur

spiral mortar Jul 18, 2018, 11:22 PM

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Yes, have you changed the project engine?

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Switch UE version or smthg

elder falcon Jul 18, 2018, 11:22 PM

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no project, I just opened the UE4.sln to start messing with 4.20

spiral mortar Jul 18, 2018, 11:22 PM

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Ah

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Well broken then

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Clear the cache

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😛

elder falcon Jul 18, 2018, 11:26 PM

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there we go it's unfucked now

#

that was weird

spiral mortar Jul 18, 2018, 11:26 PM

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You deleted the cache?

elder falcon Jul 18, 2018, 11:27 PM

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yeah I found a option for it in the ui

spiral mortar Jul 18, 2018, 11:27 PM

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Cool

elder falcon Jul 18, 2018, 11:27 PM

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rebuild symbol databases & clear cache

spiral mortar Jul 18, 2018, 11:27 PM

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VA isn't perfect with that

elder falcon Jul 18, 2018, 11:27 PM

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now let's see if opening my project on 4.19 fucks it again

spiral mortar Jul 18, 2018, 11:27 PM

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Like the other day I had a 40GB cache

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40GB cuz there wasn't any space left for more

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btw how long is an engine parse for you?

elder falcon Jul 18, 2018, 11:29 PM

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uh

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I didn't measure it

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around 1 minute

spiral mortar Jul 18, 2018, 11:29 PM

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Ok

elder falcon Jul 18, 2018, 11:30 PM

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or 2 maybe

spiral mortar Jul 18, 2018, 11:30 PM

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😉

elder falcon Jul 18, 2018, 11:31 PM

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no it doesn't seem to be that simple

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opening and parsing the 4.19 source build didn't fuck up the symbols in the 4.20 one

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hmm

spiral mortar Jul 18, 2018, 11:32 PM

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Yes

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Expected